Bobcat S205 Tilt Cylinder Replacement: A Comprehensive Guide

[MikePhua]

The Bobcat S205 skid-steer loader is a versatile machine widely used in construction, landscaping, and agricultural applications. One of its critical components is the tilt cylinder, which controls the forward and backward movement of the bucket. Over time, these cylinders can wear out or become damaged, leading to reduced performance or complete failure. This guide provides detailed information on the tilt cylinder, common issues, replacement options, and maintenance tips.
Understanding the Tilt Cylinder
The tilt cylinder in the Bobcat S205 is a hydraulic component that allows the operator to tilt the bucket to dump materials or to level the ground. It operates by converting hydraulic fluid pressure into mechanical force, moving the bucket in a controlled manner. The cylinder is connected to the loader arm and the bucket, and it is actuated by the machine's hydraulic system.
Common Issues with Tilt Cylinders

1. Hydraulic Fluid Leaks
   Leaks are a common issue, often caused by worn seals or damaged cylinder rods. These leaks can lead to a loss of hydraulic pressure, affecting the tilt function.
   
2. Cylinder Drift
   If the bucket slowly tilts forward or backward without operator input, it may indicate internal leakage within the cylinder or issues with the hydraulic valve.
   
3. Reduced Performance
   A noticeable decrease in the speed or force of the bucket's tilt movement can be a sign of a failing cylinder or insufficient hydraulic fluid.
   

Replacement Options
When replacing the tilt cylinder, it's essential to choose a compatible and high-quality component. The OEM part number for the Bobcat S205 tilt cylinder is 7117174. Several aftermarket options are available that meet or exceed OEM specifications.
Specifications of the Tilt Cylinder

• Bore Diameter: 2.75 inches
  
• Rod Diameter: 1.375 inches
  
• Stroke Length: Approximately 20.5 inches
  
• Center to Center Length: 21.5 inches
  

Replacement Cylinder Options

• OEM Replacement: Bobcat offers the 7117174 tilt cylinder, ensuring compatibility and quality.
  
• Aftermarket Options: Several manufacturers provide aftermarket cylinders compatible with the S205. For instance, RAParts offers a hydraulic tilt cylinder that fits Bobcat models including the S205.
  

Seal Kits for Rebuilding
If the cylinder is in good condition but leaking, rebuilding with a new seal kit can be a cost-effective solution. The Bobcat 6806330 seal kit is designed for the 7117174 cylinder and includes components such as wipers, rod U-cups, piston seals, and O-rings.
Installation Tips

1. Safety First: Always wear appropriate personal protective equipment (PPE) and ensure the machine is turned off and secured before starting any work.
   
2. Relieve Hydraulic Pressure: Before disconnecting any hydraulic lines, relieve the system's pressure to prevent accidental fluid discharge.
   
3. Proper Tools: Use the correct tools to remove and install the cylinder to avoid damaging components.
   
4. Torque Specifications: Follow the manufacturer's torque specifications for all fasteners to ensure proper assembly.
   
5. Check for Leaks: After installation, test the system for leaks and proper operation before returning the machine to service.
   

Maintenance Tips

• Regular Inspections: Periodically check the tilt cylinders for signs of wear, leaks, or damage.
  
• Cleanliness: Keep the cylinder rods clean and free from debris to prevent seal damage.
  
• Hydraulic Fluid: Maintain the proper level and cleanliness of hydraulic fluid to ensure optimal performance.
  
• Seal Replacement: Replace seals at the first sign of wear or leakage to prevent further damage.
  

Conclusion
The tilt cylinders on the Bobcat S205 are vital for the machine's performance and versatility. Regular maintenance and timely replacement of these cylinders can prevent costly downtime and ensure the loader operates efficiently. By understanding the components, common issues, and available replacement options, operators can make informed decisions to keep their equipment in top condition.